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. A. THAISON.

KILN

INVENTOR Patented Dec. 8, 1896.

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5 Sheets-Sheet 4. A. THAISON;

KILN

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Patented Dec; 8, 1896'.

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7 (No Model.) 5 Sheets-Sheet 5.

A. THAISON.

KILN.

No. 572,841. Patented Dec. 8, 1896.

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1' m%fl WITNESSES: HVVE/VTOI? z WM ATTORNEYS NITED STATES PATENT OFFICE.

ANDRE? TI-IAISON, QF LAREDO, TEXAS.

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SPECIFICATION forming part of Letters Patent No. 572,841, dated December8, 1896. Application filed Pebruai-y 12, 1896. Serial No. 578,974. (Nomodel.)

To all whom it may concern.-

Be it known that I, ANDREW THAISON, of Laredo, in the county of Webb andState of Texas, have invented a new and Improved Kiln, of which thefollowing is a full, clear, and exact description.

The invention relates to updraft-kilns; and its object is to provide anew and improved kiln for burning brick and other clay ware and arrangedto enable the operator to control the heat, so as to insure a uniformand equal heating of the articles set in the kiln, and at the same timerequiringa small amount of fuel.

The invention consists in the particular construction and arrangement ofparts, as will be fully described hereinafter and then pointed out inthe claim. 7

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a side elevation of the improvement. Fig. 2 is a sectionalplan view of the same on the lines 2 2 of Figs. 1 and 4. Fig. 3 is anend elevation of the same. Fig. 4 is a cross-section of the same on theline 4 4 of Fig. 1. Fig. 5 is a sectional plan View of the improvementon the line 5 5 of Fig. 4, and Fig. 6 is a longitudinal section of theimprovement on the line 6 6 of Fig. 3.

The improved kiln is provided with a burning-chamber A, having a fioorA, on which the bricks and other articles to be burned are set, saidchamber having its sides A connected with each other by an arched roof Aas plainly shown in Fig. 4, and the ends A of the chamber are providedwith openings B for passing the bricks or other articles into the kilnor for removing the same therefrom after they are burned.

The green bricks C are stacked on the floor A in such a manner as toform the usual transverse smoke-flues O, terminating at their ends atthe inner ends of the combustion-chambers D, forming part of thefurnaces D, arranged on the sides A of the chamber. Thus twooppositely-arranged furnaces discharge their heat directly into thesmoke-flueformed by the green bricks, the heat then rising from thesmoke-flue through the stack of green bricks to burn the same.

Each furnace D is provided with the usual grate and ash-pit E, and doorslead to said furnaces and ash-pits for introducing the fuel and removingthe ashes in the usual manner.

The green bricks are set in the chamber A to a height within a shortdistance of the arched roof A as indicated in Figs. 4 and 6, anddraft-fines F open by their branch channels F into the interior of thechamber at the arched roof A between the inner ends D of the adjacentfurnaces. (See Fig. 6.) The draft-flues F extend above the roof A" andopen into the atmosphere.

Each branch flue F contains a damper G, adapted to be manipulated fromthe outside to permit the operator to regulate the escape of the heat,water-smoke, due, from the arched roof of the chamber,as the burning ofthe brick may require.

, In order to insure a good draft in each corner of the chamber A, Iprovide a draft-flue H for each corner and leading to the outside, and asimilar draft-flue I is arranged at or near the middle of each end A itbeing, however, understood that all the draft-flues F, l

H, and I open into the chamber A above the brick or other ware set inthe chamber, By arranging the furnaces and smoke-fines O alternatelywith the branch draft-fines F, I insure a complete circulation of theheat through the green bricks, as the heat has to rise upwardly andsidewise in order to finally reach said draft-fines. Closedoutlet-openings J are formed in the top of the roof A to permit the heatcontained in the roof to escape to the outer air whenever desired.

By the arrangement described I am enabled to dispense with the twocourses of bricks usually placed as a covering on the top of the greenbricks to be burned, and,furthermore, the Water-smoke can readily escapeWithout danger of injuring any of the green brick, as all draft is in anupward direction.

By the arrangement described I am enabled to hold the heat any desiredlength of time within the chamber A, so as to permit of annealing thebricks, cooling the same gradually, as required, by simply closing thedampers G accordingly. The outside of the kiln is bound in by suitablemetallic posts and braces, as indicated in the drawings.

Having thus fully described by invention, I claim as new and desire tosecure by Letters Patent A kiln, comprising an arched chamber adapted toreceive the bricks or other articles to be burned, furnaces arranged inthe sides of the chamber and located directly opposite each other, maindraft-flues arranged at the sides of the kiln directly above the innerend of said furnaces and each having branch flues leading from oppositesides thereof and open ing into the arched roof of the chamber at anangle to the main flue, the openings of the branch flues being above andalternating f with the inner ends of the said furnaces,

charged from the furnaces pass upwardly and sidewise through thematerial to be burned insuring a complete circulation of the saidproducts of combustion through the material,da1npers located in eachbranch flue, a draft-flue leading from the arched roof of the chamber ateach end thereof, and a draftflue for each corner of the chamber, eachof the said flues opening into the upper part of the chamber above thematerial to be burned, *asand for the purpose set forth.

ANDREW THAISON. Witnesses: HENRY FISHER,

whereby thehot products of combustion dis- A. O. HAMILTON.

